Yes - he is not in any immediate danger of dying with a broken leg. Yes it might hurt like hell, but tell me if it needed fixing there and then. Would you have personally operated right then or would he have waited until the next day?
If a player is moving in any way (except clear grand mal epileptic seizures) even with a head injury the referee should play on as the player has a clear airway. This stopping the game nonsense just because it's a bang on the head is daft.